Oregon 90-656 Lawn Mower Mulching Blade, Gator G3, 17-3/16-Inch, Replaces Cub Cadet Center hole: 3/4" Aggressive blade angle increases air flow to push debris up and out for superior bagging or side discharge. Gator Mulcher provides cleaner, more efficient cutting performance can eliminate the need to bag, saving time and hassle. Replaces major brand: Cub Cadet